HHP 1110 Lecture Notes - Ependyma, Neuroglia, Central Canal

• School: University of Iowa
• Department: Health and Human Physiology
• Course: HHP 1110

Document Summary

Nervous tissue: ch 14b glial cells, myelination & regeneration overview of glial cells characteristics. Nerurogliia (glial cells) protect & nourish neurons. Brain tumors are more likely to be derived from glial cells than neurons glial cells of the cns astrocytes. Most abundant glial cells in the cns. Help form the blood-brain barrier ependymal cells. Ciliated cuboidal epithelial cells that line ventricles of brain & central canal of spinal cord. Help produce cerebrospinal fluid (csf) microglial cells. Small cells that move through cns & engulf debris oligodendrocytes. Wrap themselves around the axons like electrical tape wrapped around a wire. Produce myelin which is an insulator of electrical activity glial cells of the pns satellite cells. Satellite cells regulate fluid composition around neuron cell bodies neurolemmocytes. Similar in structure & function to oligodendrocytes. Increase propagation rate of nerve impulse myelination of axons. Myelin affects the ability of neurons to conduct nerve impulses (action potentials)